Compressed-air tank.



PATENTE'D OCT. 1'5, 1907. W. J. GRIFFIN. GOMPRBSSED AIR TANK.

APPLICATION FILED JULYZ, 1906. A

I 3h00/Hhs@ alterna/L3 @1R11 h1 como WILLIAM J. GRIFFIN, OF MORLEY, MICHIGAN.

- COMPRESSED-AIR TANK.

Specification of Letters Patent.

Patented Oct. 15, 1907.

Application filed July 2, 1906. Serial No. 324,428.

l To all whom il muy concern:

fie it known that l, WILLIAM J. GRIFFIN, a citizen of the United States, residing at Morley, in the county of Mecosta and State of Michigan, have'invented certain new and useful Improvements in Compressed Air Tanks, of which the following is a specification.

My invention relates to an improvement in. compressed air tanks. the object being to provide a simple storage tank in which air is storedvand compressed, the saine being adapted for use for various purposes, as for instance, it may be utilized for blowing whistles, in factories operated by water power or electricity, electric cars, for setting brakes on cars, and for alarm whistles, gasolenc engines and the like.

With the foregoing objects in view, my invention consists in an outer metal tank having an elastic lining spaced away from the walls of the outer tank and adapted to receive air and by its elasticity facilitate its utilization when discharged from the tank.

The invention further consists in certain novel fea tures of construction and combinations of parts which `will be hereinafter described and pointed out in the claims.

ln the accompanying drawings: Figure Il is a view in perspective. Fig. 2 is a longitudinally vertical section.

A, represents the outer tank which may be of any suitable metal in the form of a cylinder or otherwise, and l is an inner elastic bag contained therein. The walls of the outer tank A are preferably corrugated as at l, l, the purpose of these corrugations being to allow greater expansion ol' the rubber bag so as to give the contained air greater power when discharged from the tank as the corrugations permit the bag to expand into the grooves when the bag is [illed with air, affording lateral support for the bag. Vents, 2, 2 for the introduction and escape ol air between the bag and the tank walls are provided.

A pipe ii, extends down into the tank through a plate 4 which latter is securely bolted as at 5, 5, to the tank. A cone, (i, is bolted to plate 4t by means of bolts 7, 7, and a cap-shaped uut 8 is screwed to the lower end of the pipe 3 between which nut S and cone 6, the thickened portion E) of the rubber bag is secured, the latter being clamped firmly therebetween by means of the nut l() located above the plate t on the pipe 3.

A pipe coupling ll on the upper end of pipe 3 has the pipe l2, I2, extending therefrom and valves I3, 13 in the pipes l2, 12 control the induction and eduction of air to and from the interior chamber o the elastic bag or envelop B. i I

In operation air is introduced into the bag or envelop B through the pipe 3 by opening one of the valves 13 and after the bag is iilled, and expanded to its utmost, the valve is closed and the air is compressed and stored for future use, it being capable oi being utilized for various purposes, in fact, forany purpose for which compressed air may be used.

In thi's way, an inexpensive and practical arrangement is provided for the storage and compression of air within small compass and for increasing its eiiiciency.

Slight changes might be resorted to in the form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I do not Wish to limit myself to the exact construction herein set forth, but:

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is:-

l. The combination with an'outer tank havingl a corrugated interior and vents therein, of an elastic bag or envelop within the tank, a portion of the bag or envelop being thickened and having'` an opening therethrough, a threaded pipe extending through the opening and a capshaped nut and a cone to which the pipe is screwed and between which the thickened portion of the bag or envelop is held.

1.. The combination with an outer tank having a corrugated interior and vents therein, of an elastic bag 0r envelop within the tank, a portion ol the bag or envelop being thickened and havingan opening there through, a threaded pipe extending through the opening and a capshaped nut and a cone to which the pipe is screwed and between which the thickened portion of the bag or envelop is held, a plate to which the cone is secured, said plate se cured to the outer tank and a nut located outside of the plate and adapted to screw upon the pipe whereby to clamp the thickened portion of the bag or envelop between the cone and'cap-shaped nut.

The combination with a tank having;` a corrugated in lierior and Vents to the outside, of an elastic bag adapted to be expanded into the corrugations, of a pipe extending into the bag, a plate, a cone, the pipe screwed into the cone and a lint into which the end of the pipe screws.

In testimony whereof I a-Iix my signature in presence of two witnesses.

WILLIAM J. GRIFFIN.

Witnesses L. L. BissELL, J. L. LAZIER. 

